Assembly Binding Redirect to a lower version

Question

I am trying to downgrade a NServiceBus dependency so instead of using 4.0.0.0 to use 2.5.0.0

I am trying with the following ways, none of which seem to work.

Answer 1

According to MSDN: https://msdn.microsoft.com/en-us/library/eftw1fys(v=vs.110).aspx

This value can specify an earlier version than oldVersion.

referring to the newVersion attribute of bindingRedirect. Also in the "Remarks" section:

You can also redirect from a newer version to an older version of the assembly.

Their example is:

I did notice it also mentions something about Explicit assembly binding redirection in an application configuration file requires a security permission, maybe that's affecting you as well?